In August 2006, Chang's second restaurant, Momofuku Ssäm Bar, opened a few blocks away. In March 2008, Chang opened Momofuku Ko, a 12-seat restaurant that takes reservations ten days in advance, online only, on a first-come-first-served basis. Later that year, Chang expanded Momofuku Ssäm Bar into an adjacent space, which he named Momofuku Milk Bar, serving soft serve, along with cookies, pies, cakes and other treats.